This model is discontinued
AirTAC has phased out the MALJ series. You can still order this code here: we ship the direct replacement MBLJ20X100-30S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The MBLJ replacement upgrades to a riveted rolling-packed body and CMSG / DMSG / EMSG sensors (the MAL used CS1-M / DS1-M).
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S
The AirTAC Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S is a double-acting aluminum mini cylinder with a rear adjustable-stroke stopper: you can trim up to 30 mm, giving a usable end-position window from 70 to 100 mm. This model is discontinued — the direct replacement is the MBLJ20X100-30-S.
- BoreØ20 mm
- Stroke100 mm
- Adjust window70–100 mm
- Port sizeG1/8
- Rod threadM8×1.25
- StatusDiscontinued → MBLJ20X100-30-S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S
The AirTAC MALJ20X100-30-S is a discontinued double-acting mini cylinder with a 20 mm bore and a 100 mm stroke. It provides a usable stroke window of 70-100 mm via its 30 mm rear adjuster. The direct replacement is the MBLJ20X100-30-S, matching the bore, stroke, adjust code, and G1/8 port.
The rear adjuster acts as a mechanical travel stop to fine-tune the end position without external spacers, but it will not hold a load without live air. This MALJ unit has threaded covers and uses CS1-M or DS1-M switches with its -S magnet. The MBLJ20X100-30-S upgrade shifts to a riveted rolling-packed body and CMSG/DMSG/EMSG sensors. End impact is absorbed by a fixed rubber bumper, not an adjustable air cushion.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S Technical Specifications
| Model | Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S |
|---|---|
| Series | MALJ adjustable-stroke mini cylinder (discontinued) |
| Replacement | MBLJ20X100-30-S |
| Bore size | Ø20 mm |
| Stroke | 100 mm |
| Adjustable window | 70 – 100 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.1 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed rubber bumper |
| Max standard stroke | Up to 300 mm |
The rear adjuster is a travel stop, not a lock — it sets the end position but does not hold the load without live air. No back-cover code and no SDB on adjustable-stroke. The MBLJ20X100-30-S carries the same ratings.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 132 N | 132 N |
| 0.7 MPa | 185 N | — |
| Max (@1.0 MPa) | 27 kgf | |
MALJ is double-rod: the rear rod that carries the stroke adjuster passes through the rear cover, so both piston faces lose rod area. Push is shown at the annular-area value (conservative), lower than a single-rod MAL push of the same bore. The MBLJ20X100-30-S matches these values.
Model Code: Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S
| MALJ | Adjustable-stroke aluminum mini cylinder, double acting (discontinued). |
|---|---|
| 20 | Bore size in mm (20/25/32/40). |
| ×100 | Nominal stroke length in mm. |
| -30 | Adjustable amount: trim the end to a 70–100 mm window. |
| S | Optional magnet for a CS1-M / DS1-M sensor (MBLJ uses CMSG/DMSG/EMSG). |
Replacement: MALJ → MBLJ. No back-cover (CA/U/CM) and no SDB. Mounting: FA / LB.
Where the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S Is Used
PCB Router Z-Axis Depth Stop
Dials the exact 70-100 mm descent on a depaneling router.
Dispenser Valve Positioning
Trims the retract distance on an automated epoxy dispenser. The 30 mm rear stopper lets operators change shot height without reprogramming the PLC.
Light-Duty Part Ejector
Pushes small plastic caps from a mold cavity. The fixed rubber bumper absorbs the 100 mm stroke end-impact, protecting the delicate parts.
Replacing the Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S with MBLJ20X100-30-S
To replace this MALJ20X100-30-S, order the exact MBLJ20X100-30-S direct. Confirm the 20 mm bore, 100 mm stroke, 30 mm adjust code, G1/8 PT port, and M8x1.25 rod thread. Mounting is Basic, FA, or LB only, as there is no back-cover or SDB option. The -S magnet means a sensor change is required, moving from the older CS1-M/DS1-M switches to the MBLJ's CMSG/DMSG/EMSG family. Remember the rear screw is a travel stop, not a lock.
For sizing, if you need less force, step down to the 32 mm bore (wait, stepping down is smaller) step down to a smaller bore if available, but here stepping up is common. If you need less force, the next size down is not available in this MALJ series, so this 20 mm bore is your minimum. For this 100 mm stroke, ensure the M8 rod is guided to prevent side-load bending.
Upgrade checklist
- ✓ Order the MBLJ20X100-30-S (same bore/stroke/adjust)
- ✓ Same 70–100 mm adjustable window
- ✓ Adjuster is a stop, not a lock
- ✓ No back cover / SDB — plan an FA/LB mount
- ✓ Sensor: swap CS1-M/DS1-M → CMSG/DMSG/EMSG
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.1 – 1.0 MPa operating pressure.
- check The rear adjuster sets the end position — it is not a load lock.
- check No back-cover / SDB on adjustable-stroke — use FA / LB.
- check Front/rear covers are threaded — not for field disassembly.
- check For new builds, specify the MBLJ20X100-30-S instead of this discontinued model.
Airtac MALJ20 Adjustable Mini Cylinder MALJ20X100-30-S FAQ
Yes, the MALJ20X100-30-S is discontinued. The direct replacement is the MBLJ20X100-30-S. It matches the 20 mm bore, 100 mm stroke, 30 mm adjust code, and G1/8 port. You will need to upgrade your sensors from CS1-M/DS1-M to CMSG/DMSG/EMSG.
The 30 mm adjuster creates a usable stroke window of 70-100 mm. Note that the adjuster is a travel stop, not a lock, and cannot hold a load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
Direct Upgrade
The MBLJ20X100-30-S replaces this model 1:1.
Fast Dispatch
MBLJ replacements are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Recommended AirTAC MBLJ Replacements
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